Original Colorado Highway Department Porcelain Adv
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This is a Original Colorado Highway Department Porcelain Advertising Round Sign.
"These signs were used on all their trucks with one sign mounted on each door and with the vehicle unit number attached below each sign.
This porcelain sign was used from about 1970 through about 1985 when it was changed to painted aluminum and then later to a decal.. There was also an earlier version that had "Div. of Highways" across the top and "State of Colorado" across the bottom.
Needless to say at one time there were thousands of these floating around and were very common but now seldom seen. "
The unit measures at 12"wide x 12"tall .